蜀刺腿的生物学特性及防治方法研究

进行蜀刺腿的生物学特性及防治方法的研究,结果表明:该虫在渝东地区1年发生1代和2年完成1代同时存在;主要分布于三峡库区以及湘、黔、鄂武陵山区海拔300～1 200 m的柏树林、栎林内;其个体大,食性杂、食量大,危害期逾200 d;营造混交林,保护天敌是抑制该虫成灾的根本措施;在虫口密度较大的虫源地,用20%氰戊菊酯乳油等化学农药防治。在越冬前,喷施从蜀刺腿僵虫上分离生产的白僵菌,防效可达70%以上。

Research on Biological Characteristics and Control Methods of Phobaecticuo Sihuanensis Cai

The biological characteristics and control methods of Phobaecticuo sihuanensis Cai were conducted.The results showed that the insect repr-oduces one generation in one year and two years exist together in the east of Chongqing.The insect distributes mainly in the cypress woods and oak woods in the altitude between 300 meters and 1 200 meters in Three Gorges area and Hunan,Guizhou,Wuling Mountain Area of Hubei Province.Its body and appetite are big.Its harm time could last more than 200 days in one year.Planting mixed forest and protecting natural enemies were the basic measures to control its harm.In the big density location where the insects gather,it could use chemistry agricultural chemicals such as 20% fenvalerale EC.Before winter,making use of the beauveria bassiana produced by the froze Phobaecticuo sihuanensis Cai to control the insect,the effect could reach above 70%.